Ability to swallow the study drug as a whole tablet Participant is able to swallow a tablet whole Able to swallow the study drug(s) whole as a tablet Ability to swallow the study drug as a whole tablet. Able to swallow the study drug whole as a tablet Patient must be able to swallow capsule or tablet Able to swallow the study drug whole as a tablet. Able to swallow study drugs whole as a tablet/capsule. Must be able to swallow ribociclib (LEE-) tablet/capsule Patient must be able to swallow tablet or have existing gastrostomy feeding tube to enable administration of tablet Be capable of swallowing study agents whole as a tablet Able to swallow the study drugs whole as a tablet Able to swallow study drugs whole as a tablet/capsule Able to swallow the study drug as a whole tablet Patient must be able to swallow capsule or tablet Able to swallow the study drug whole as a tablet Able to swallow the study drug whole as a tablet Patients must have the ability to swallow the study drug whole as a tablet or capsule Able to swallow the study drug whole as a tablet Able to swallow the study drug whole as a tablet Able to swallow the study drug whole as a tablet Must demonstrate basic tablet skills, defined as the ability to open and close an application on the desktop of the tablet, and to be able to advance the screen by swiping left or right (required for the use of tNCF testing) Unable to swallow a whole tablet or capsule. Able to swallow the study drug whole as a tablet Able to swallow the study drug whole as a tablet Are willing and able to use a smartphone or tablet comfortably Subjects that are unable to swallow a tablet/pill for any reason Subjects that are unable to swallow a tablet/pill